Smart is a perfectly fine point guard for the team we have at the moment. If you start Brown, Tatum, Hayward and Horford, you will be running a motion offense and asking your wings to attack the defense. You want them to be the volume shooters. Smart fits fine. He struggles breaking the defense and scoring off the dribble, but you don't need that from him. Hopefully he can figure out how to push the pace, but that is a manageable adjustment.
I'm OK with Wannamaker as a backup point too.What we could use is a backup two guard so we don't have to keep Rozier.
How about Horford for Gordon and Capela?